ASTROSAT CZTI

Data Quality Report

Orbit 33701

Creation date: 2024-06-27T20:51:41.069500
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_090T01_9000004812_33701cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33701cztM0_level2_quad_clean.evt
Size (bytes)741,672,00081,996,480
Size707.3 MB 78.2 MB
Events in quadrant A10,861,972420,887
Events in quadrant B3,956,216564,230
Events in quadrant C2,896,824591,816
Events in quadrant D4,403,706548,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357283
B0150132
C0116072
D0166672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5079362971.451073%
B50794599.037212%
C5079971.909825%
D50792364.646584%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6991 5079 3680 3680 52.64% 72.46%
B 6991 5080 383 383 5.48% 7.54%
C 6991 5080 79 79 1.13% 1.56%
D 6991 5080 257 257 3.68% 5.06%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 8737572 96994.89 450 443 90.1
A 15 237 353909 3923.99 450 443 90.1
A 14 4 22374 243.47 450 443 90.1
B 5 172 1533128 14069.05 575 563 108.9
B 0 213 38269 346.14 575 563 108.9
B 4 170 23680 212.22 575 563 108.9
C 15 214 232938 1735.11 580 586 133.9
C 0 10 232614 1732.69 580 586 133.9
C 3 233 114256 848.84 580 586 133.9
D 8 195 824456 5451.25 566 556 151.1
D 7 80 767924 5077.22 566 556 151.1
D 12 6 116214 765.24 566 556 151.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter